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Finding the Fourth Proportional to 66,223.76, 99,298.20 and 60,574.94

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Solution

The fourth proportional to 66,223.76, 99,298.20 and 60,574.94 is: 90,828.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,223.76 : 99,298.20 = 60,574.94 : x
  2. Step 2: Convert to fraction form
    66,223.76/99,298.20 = 60,574.94/x
  3. Step 3: Cross multiply
    66,223.76x = 99,298.20 × 60,574.94
  4. Step 4: Simplify right side
    66,223.76x = 6,014,982,507.11
  5. Step 5: Solve for x
    x = 6,014,982,507.11/66,223.76
  6. Step 6: Final answer
    x = 90,828.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.